Method of operating an arc welding apparatus

Abstract

A method of operating an arc welding apparatus which controls and moves a welding wire of a welding torch and detects a weld between a work and the welding wire after completion of an arc welding, includes: a first step of cutting off a welding voltage to the welding wire to thereby extinguish a welding arc; a second step of detecting a weld state between the welding wire and the work; a third step of lifting the welding wire away from the work when the welded state is detected at the second step; a fourth step of detecting the welded state between the welding wire and the work after completion of the third step; a fifth step of impressing the welding voltage to the welding wire when a welded state has been detected at the fourth step; a sixth step of detecting the welded state between the welding wire and the work after completion of the fifth step; a seventh step of executing, when the welded state has been detected at the sixth step, at least one of the stopping of the operation of the arc welding apparatus, displaying of the welded state, and informing an operator of the welded state; and an eighth step of moving the apparatus to another location when the welded state has not been detected at the second, fourth, and sixth steps.

What is claimed is: 
     
       1. A method of operating an arc welding apparatus which controls and moves a welding wire of a welding torch and detects a weld between a work and the welding wire after completion of an arc welding, comprising: a first step of cutting off a welding voltage to the welding wire to thereby extinguish a welding arc;   a second step of detecting a welded state between the welding wire and the work;   a third step of lifting the welding wire away from the work when the welded state has been detected at the second step;   a fourth step of detecting the welded state between the welding wire and the work after completion of the third step;   a fifth step of impressing the welding voltage to the welding wire when a weld has been detected at the fourth step;   a sixth step of detecting the welded state between the welding wire and the work after completion of the fifth step;   a seventh step of executing, when the welded state has been detected at the sixth step, at least one of a stopping of the operation of the arc welding apparatus, displaying the welded state and informing an operator of the welded state; and   an eighth step of moving the arc welding apparatus to another location when the welded state has not been detected at the second, fourth, and sixth steps.   
     
     
       2. The arc welding method as claimed in claim 1, further comprising another step, provided between the sixth step and seventh step, of detecting whether the number of times that the apparatus during the sixth step has detected the welded state has reached a set number of times, and returning the apparatus to the third step when the number of times has not reached the set number of times, and causing the apparatus to proceed to the seventh step when the number of times has reached the set number of times. 
     
     
       3. The arc welding method as claimed in claim 1, further comprising another step, provided between the sixth step and the seventh step, of detecting whether the number of times that the apparatus during the sixth step has detected the welded state has reached a set number of times, and returning the apparatus to the fifth step when the number of times has not reached the set number of times, and causing the apparatus to proceed to the seventh step when the number of times has reached the set number of times.